/** Part of the ChecksumMover interface. */
private ChecksumFactory getChecksumFactory(GFtpProtocolInfo protocol) {
String type = protocol.getChecksumType();
if (type == null || type.equals("Unknown")) {
return null;
}
try {
return ChecksumFactory.getFactory(ChecksumType.getChecksumType(type));
} catch (NoSuchAlgorithmException e) {
esay("CRC Algorithm is not supported: " + type);
}
return null;
}
/** Part of the MoverProtocol interface. */
@Override
public void runIO(
FileAttributes fileAttributes,
RepositoryChannel fileChannel,
ProtocolInfo protocol,
Allocator allocator,
IoMode access)
throws Exception {
if (!(protocol instanceof GFtpProtocolInfo)) {
throw new CacheException(44, "Protocol info not of type GFtpProtocolInfo");
}
GFtpProtocolInfo gftpProtocolInfo = (GFtpProtocolInfo) protocol;
Role role = access == IoMode.WRITE ? Role.Receiver : Role.Sender;
int version = gftpProtocolInfo.getMajorVersion();
String host = gftpProtocolInfo.getSocketAddress().getAddress().getHostAddress();
int port = gftpProtocolInfo.getSocketAddress().getPort();
int bufferSize = gftpProtocolInfo.getBufferSize();
int parallelism = gftpProtocolInfo.getParallelStart();
long offset = gftpProtocolInfo.getOffset();
long size = gftpProtocolInfo.getSize();
boolean passive = gftpProtocolInfo.getPassive() && _allowPassivePool;
say(
MessageFormat.format(
"version={0}, role={1}, mode={2}, host={3}:{4,number,#}, buffer={5}, passive={6}, parallelism={7}",
version,
role,
gftpProtocolInfo.getMode(),
host,
port,
bufferSize,
passive,
parallelism));
/* Sanity check the parameters.
*/
if (gftpProtocolInfo.getPassive() && version == 1) {
/* In passive mode we need to be able to send the port we
* listen on to the client. With GFtp/1, we cannot send
* this information back to the door.
*/
throw new CacheException(
44, "Internal error: Cannot do passive transfer with mover protocol version 1.");
}
/* If on transfer checksum calculation is enabled, check if
* we have a protocol specific preferred algorithm.
*/
if (_checksumFactory != null) {
ChecksumFactory factory = getChecksumFactory(gftpProtocolInfo);
if (factory != null) {
_checksumFactory = factory;
}
_digest = _checksumFactory.create();
}
/* We initialise these things early, as the job timeout
* manager will not kill the job otherwise.
*/
_transferStarted = System.currentTimeMillis();
_lastTransferred = _transferStarted;
Mode mode = createMode(gftpProtocolInfo.getMode(), role, fileChannel);
mode.setBufferSize(bufferSize);
/* For GFtp/2, the FTP door expects a
* GFtpTransferStartedMessage when the mover is ready to
* transfer the data.
*/
if (version == 2) {
GFtpTransferStartedMessage message;
if (passive) {
/* When in passive mode, the door passes us the host
* from which the control channel was created. It
* seems like a safe assumption that the data channel
* will be established from the same network.
*/
InetAddress clientAddress = InetAddress.getByName(gftpProtocolInfo.getClientAddress());
InetAddress localAddress = NetworkUtils.getLocalAddress(clientAddress);
/* When using true passive mode, we open a server
* socket and send a message containing the port
* number back to the door.
*/
ServerSocketChannel channel = ServerSocketChannel.open();
if (bufferSize > 0) {
channel.socket().setReceiveBufferSize(bufferSize);
}
_portRange.bind(channel.socket(), localAddress, 128);
message =
new GFtpTransferStartedMessage(
fileAttributes.getPnfsId().getId(),
channel.socket().getInetAddress().getHostAddress(),
channel.socket().getLocalPort());
mode.setPassive(channel);
} else {
/* If passive mode is disabled, then fall back to
* active mode. When notified about this, the door
* will fall back to proxy mode.
*/
message = new GFtpTransferStartedMessage(fileAttributes.getPnfsId().getId());
}
CellPath path =
new CellPath(
gftpProtocolInfo.getDoorCellName(), gftpProtocolInfo.getDoorCellDomainName());
_cell.sendMessage(new CellMessage(path, message));
}
if (!passive) {
/* We use PROXY or ACTIVE mode. In proxy mode, host and
* port identify the SocketAdapter running at the door. In
* Active mode, host and port identify the client. Either
* way, we do not really care.
*/
try {
mode.setActive(new InetSocketAddress(host, port));
} catch (UnresolvedAddressException e) {
throw new CacheException("Failed to resolve " + host);
}
}
/* - Parallel transfers in stream mode are not defined.
*
* - Receiption in E mode must be passive (incomming). If the
* connection is outgoing, it means we use a proxy at the door.
* This proxy is limitted to one connection from the mover.
*
* In either case, set the parallelism to one.
*/
switch (Character.toUpperCase(gftpProtocolInfo.getMode().charAt(0))) {
case 'E':
if (role == Role.Receiver && !passive) {
parallelism = 1;
}
break;
case 'S':
parallelism = 1;
break;
}
mode.setParallelism(parallelism);
/* Setup partial retrieve parameters. These settings have
* already been checked by the door, but better safe than
* sorry...
*/
if (role == Role.Sender) {
long fileSize = fileChannel.size();
if (offset < 0) {
String err = "prm_offset is " + offset;
esay(err);
throw new IllegalArgumentException(err);
}
if (size < 0) {
String err = "prm_offset is " + size;
esay(err);
throw new IllegalArgumentException(err);
}
if (offset + size > fileSize) {
String err =
"invalid prm_offset="
+ offset
+ " and prm_size "
+ size
+ " for file of size "
+ fileSize;
esay(err);
throw new IllegalArgumentException(err);
}
mode.setPartialRetrieveParameters(offset, size);
}
try {
transfer(fileChannel, role, mode, allocator);
} finally {
/* Log some useful information about the transfer. This
* will be send back to the door by the pool cell.
*/
gftpProtocolInfo.setBytesTransferred(getBytesTransferred());
gftpProtocolInfo.setTransferTime(getTransferTime());
}
}
